Questions & Answers
Below are just some of the regular questions we get asked about our preservative treatment for timber.
Simply click on the appropriate question to read the answer.
Should you need more detail from the answers supplied or have other questions, please contact us.
What elements make up TANALITH E wood preservative?
What are the recommended areas of use for TANALISED E pressure treated timber?
Can I use TANALISED E pressure treated timber around my fish pond?
Is TANALISED E pressure treated timber safe to use in nature reserves?
What happens to the preservative protection when TANALISED E treated timber is cut or notched?
How do I dispose of TANALISED E treated timbers and can they be incinerated?
Are treated timbers previously supplied by A E Evans covered by the current 15 year warranty?
Is TANALISED E pressure treated timber safe to use in children's playgrounds?
What elements make up TANALITH E wood preservative?
TANALITH E is a unique formulation, new generation products that is based on a combination of copper and modern triazole biocides. Copper provides excellent protection against many forms of rot and insects that can attack timber, whilst Tebuconazole and Propiconazole combine to protect against particular copper tolerant brown rot fungi. The copper in TANALITH E is derived from recycled sources and the triazoles are commonly used to protect the food crops we eat.
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What are the recommended areas of use for TANALISED E pressure treated timber?
TANALISED E pressure treated timber is designed for a wide range of end uses from internal building timbers through to external timbers in ground or fresh water contact. These are classified as Use Classes 1-4 as defined in BS EN 335-1. TANALISED E pressure treated timber has a natural pale green colouration that blends perfectly with outdoor environments, making it ideal for fencing or landscaping applications.
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Can I use TANALISED E pressure treated timber around my fish pond?
TANALISED E pressure treated timber is suitable for use in, around and over garden ponds. However, where fish are present we recommend that direct water contact is avoided.
Whilst we are confident about the safety of TANALISED E pressure treated timber, fish are very sensitive creatures and may respond unfavourably to changes in their surroundings.
Prior to use, you should ensure that the timber is in a dry condition; two weeks post treatment is usually sufficient time to allow for drying although this is weather and storage condition dependent. Please also ensure that the timber you use has been treated to the correct specification - Arch Specification Code TE/Gfa if the timber is to be used above ground (Use Class 3) and TE/GFb if it is to be used in ground (Use Class 4).
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Is TANALISED E pressure treated timber safe to use in nature reserves?
TANALISED E pressure treated timber is suitable for use on a nature reserve.
Prior to use, you should ensure that the timber is in a dry condition; two weeks post treatment is usually sufficient time to allow for drying although this is weather and storage condition dependent.
Please see the Code of Practice and Consumer Information Sheet for more information on the use of TANALISED E pressure treated timber.
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I am doing a COSHH assessment on the treated timber we stock. Can you send me a material safety data sheet for your preservative products?
The Control of Substances Hazardous to Health (COSHH) Regulations refer to substances. Preservative treated timber is not a substance but an article and therefore COSHH regulations do not apply to the actual treated timber. A 'COSHH and treated timber' information sheet does provide more details relating to this classification - click here for more details.
The preservative treated timber should be delivered to you in a surface dry condition. This is safe to handle as recommended and can be handled in the same way as untreated timber.
The documents below, which provide health and safety handling recommendations, may also assist in carrying out your COSHH risk assessment:
• Consumer Information Sheet - TANALISED E pressure treated timber
• Code of Practice - TANALISED E pressure treated timber
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What happens to the preservative protection when TANALISED E treated timber is cut or notched?
Ideally timber should be cut or notched before treatment. However, where these procedures are required on-site, the surfaces exposed by the cutting or notching should be further protected with ENSELE brush-on end grain preservative to maintain the integrity of the preservative protection.
Further information on ENSELE brush-on end grain preservatives products is available from the following technical data sheet:
ENSELE technical data sheet
ENSELE can be ordered thorough A E Evans.
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How do I dispose of TANALISED E treated timbers and can they be incinerated?
The concentration of the hazardous components in TANALISED E treated wood waste is below the European Waste thresholds and therefore both wastes are not hazardous.
Processing wastes, such as sawdust and off-cuts, must not be used for animal litter or bedding.
Preservative treated timber should not be used as a fuel in barbeques, cooking stoves or grates.
Generally, small quantities (less than 0.5 tonnes) can be burnt at any one time in the open, providing the fire is positioned to enable adequate dispersal of the smoke. The residual ash is non-hazardous. However, due to a few recent developments from some local councils under the Environmental Protection Act 1990, we would recommend that consultation should be made to these regulations, and preferably to the local enforcement agency, before burning any waste on site.
Householders should dispose of the timber or sawdust through the ordinary waste collection service or at local authority amenity/disposal facilities.
Any waste timber, sawdust or redundant timber from commercial or industrial use (e.g. construction sites) should preferably be recycled by re-use or disposed of to an authorized landfill or to a correctly controlled and approved waste contractor.
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Are treated timbers previously supplied by A E Evans covered by the current 15 year warranty?
We are confident about the performance of all treated timbers supplied by A E Evans prior to this warranty being issued and any claims for replacement timbers will be assessed on an individual basis.
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Is TANALISED E pressure treated timber safe to use in children's playgrounds?
TANALISED E pressure treated timber is safe to use for structures in and around children's play areas.
With regard to any concerns that the children may 'chew' or 'eat' the treated timber, preservative manufacturers have to conduct safety studies to demonstrate safe use of their products as part of their approval process. These studies have shown that the preservative within the timber would not cause harm to a child in the quantities that they are able to 'eat' or 'chew'.
Prior to use, you should ensure that the timber is in a dry condition; two weeks post treatment is usually sufficient time to allow for drying although this is weather and storage condition dependent.
Please see the Code of Practice and Consumer Information Sheet for more information on the use of TANALISED E pressure treated timber.
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Is TANALISED E pressure treated timber safe to use for earth retaining structures for organic vegetable beds?
TANALISED E pressure treated timber is suitable for the construction of earth retaining structures for organic vegetable beds. The Soil Association - www.soilassociation.org. states that if the timber used for organic vegetable beds is preservative pre-treated then there are no issues in terms of organic status. If, however, the wood is treated once the raised bed has been built (brush applied preservative) then this would effect the status of the land.
Prior to use, you should ensure that the timber is in a dry condition; two weeks post treatment is usually sufficient time to allow for drying although this is weather and storage condition dependent.
Please see the Code of Practice and Consumer Information Sheet for more information on the use of TANALISED E pressure treated timber.
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